High-pressure coal slurry pump piston rod convenient to fasten

Abstract

The utility model discloses a high-pressure coal slurry pump piston rod convenient to fasten, which belongs to the technical field of high-pressure coal slurry pumps and comprises a coal slurry pump body, the inner wall of the coal slurry pump body is in threaded connection with a piston rod, the outer surface of the piston rod is provided with two semicircular rings, the outer surface of one semicircular ring is fixedly connected with two first rectangular plates, and the outer surface of the other semicircular ring is fixedly connected with two second rectangular plates. The outer surface of one semicircular ring is fixedly connected with two first rectangular plates, the outer surface of the other semicircular ring is fixedly connected with two second rectangular plates, the inner wall of each first rectangular plate is fixedly connected with a rectangular frame, the inner wall of each rectangular frame and the inner wall of each first rectangular plate are rotatably connected with rotating shafts, the outer surface of each rotating shaft is fixedly connected with a gear, and the outer surface of each gear is engaged with a toothed plate. According to the high-pressure coal slurry pump piston rod convenient to fasten, due to the fact that the gear and the toothed plate are not limited any more, the second rectangular plate and the first rectangular plate can be detached freely, and the problem that in the using process of equipment, installation and detachment can only be conducted with the help of tools, and certain inconvenience exists is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of high-pressure coal slurry pumps, and particularly relates to a high-pressure coal slurry pump piston rod convenient to fasten. BACKGROUND

[0002] The high-pressure coal slurry pump is a key equipment for coal slurry gasification, and is a reciprocating pump. During long-term operation, the piston rod is in a reciprocating alternating load working condition. The piston rod and the crosshead are connected by threads, and a locking device is arranged. However, during one cycle of operation of the high-pressure coal slurry pump, the threads of the piston rod and the crosshead are loose.

[0003] According to the utility model with the application number CN202323036320.6, a high-pressure coal slurry pump piston rod convenient to fasten is disclosed, which comprises a piston, the piston rod is installed in a hydraulic cylinder, and the two ends of the hydraulic cylinder are provided with seals; one end of the piston rod is connected with a crosshead part of a crankcase by threads, the end of the piston rod is locked by a fastening ring, and the other end of the piston rod is provided with a clamping device for fastening; the clamping device is driven to rotate the piston rod, so as to fasten the connection between the piston rod and the crosshead part of the crankcase.

[0004] Compared with the method of fastening the piston rod by using random tools, the clamping device does not need to extend the piston rod into the interior of the hydraulic cylinder, does not need to drain the lubricating oil in the interior of the piston cylinder, and does not need to remove the large cover at the end of the hydraulic cylinder. Only the protective sleeve at the end of the piston rod needs to be removed. The operation is simple, the maintenance workload is reduced, and the maintenance cost is saved. However, the installation of the clamping device in the above technical scheme needs to use a wrench and a bolt, and cannot realize automatic locking, which is inconvenient.

[0005] Therefore, the application provides a high-pressure coal slurry pump piston rod convenient to fasten to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The application aims to solve the problem that the installation of the clamping device needs to be assisted by work, and provides a high-pressure coal slurry pump piston rod convenient to fasten.

[0007] In order to achieve the above purpose, the application adopts the following technical scheme:

[0008] The utility model provides a high pressure coal water slurry pump piston rod of convenient fastening, including coal water slurry pump body, the inner wall of coal water slurry pump body is connected with piston rod through screw thread, the outer surface of piston rod is provided with two half rings, and the outer surface of one of half rings is fixedly connected with two first rectangular plates, and the outer surface of another half ring is fixedly connected with two second rectangular plates, the inner wall of each first rectangular plate is fixedly connected with rectangular frame, the inner wall of each rectangular frame and the inner wall of first rectangular plate is rotatably connected with the shaft, the outer surface of each shaft is fixedly connected with gear, the outer surface of each gear is engaged with the toothed plate, the bottom of each toothed plate is penetrated rectangular frame and first rectangular plate and extends to the below of first rectangular plate, the bottom of each toothed plate is fixedly connected with the upper surface of second rectangular plate, the outer surface of each toothed plate is slidably connected with first rectangular plate and rectangular frame, the end of two gears away from each other is provided with clamping groove, the inner wall of each rectangular frame is fixedly connected with force spring, the end of two force springs close to each other is fixedly connected with clamping block, the outer surface of each clamping block is slidably connected with rectangular frame, the outer surface of each clamping block is clamped with the inside of clamping groove, the end of two clamping blocks away from each other is fixedly connected with transmission shaft, the outer surface of each transmission shaft is slidably connected with rectangular frame, and the end of two transmission shafts away from each other is fixedly connected with rectangular block.

[0009] Preferably, the front surface of each first rectangular plate is fixedly connected with a positioning block, and the upper surface of each positioning block is provided with a positioning groove.

[0010] Preferably, the front surface of each second rectangular plate is fixedly connected with a support block, the upper surface of each support block is fixedly connected with a positioning shaft, and the outer surface of each positioning shaft is slidably connected with the inside of the positioning groove.

[0011] Preferably, the outer surface of each half ring is fixedly connected with a rubber pad, and the outer surface of each rubber pad is in contact with the outer surface of the piston rod.

[0012] Preferably, the inner wall of the coal water slurry pump body is threadedly connected with a threaded ring, and the front surface of the threaded ring is fixedly connected with a dismounting cylinder.

[0013] Preferably, the front surface of the dismounting cylinder is provided with a plurality of identical circular openings, and each transmission shaft is arranged in the inner cavity of the force spring.

[0014] In summary, the technical effects and advantages of the present application are:

[0015] By setting the semicircle ring, the first rectangular plate and the second rectangular plate, by butt joint of the first rectangular plate and the second rectangular ring, the semicircle ring can be sleeved on the periphery of the piston rod, and when the first rectangular plate is butt joint with the second rectangular plate, the tooth plate fixed on the upper surface of the second rectangular plate will enter the inside of the first rectangular plate, and the tooth plate will be in meshing relationship with the gear arranged in the inside of the first rectangular plate, so as to drive the gear to rotate until the clamping groove opened on the side of the gear rotates to the position opposite to the clamping block, at this time the clamping block will move to the clamping groove under the action of the stress spring until the clamping block is clamped in the inside of the clamping groove, so as to realize the purpose of fixing the gear, at this time the gear cannot rotate any more, and further the tooth plate is limited to move up and down, so that the first rectangular plate and the second rectangular plate can be fixed together, when disassembling, the rectangular block can drive the transmission shaft and the clamping block to move to the stress spring, so that the clamping block is separated from the clamping relationship with the clamping groove, at this time the gear and the tooth plate are no longer limited, so that the second rectangular plate and the first rectangular plate can be disassembled freely, so that the problem that the equipment needs to be installed and disassembled by means of tools in the process of use is avoided, and the inconvenience is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole three-dimensional structure schematic view of the high-pressure coal slurry pump piston rod convenient to fasten of the utility model;

[0017] Figure 2 It is a three-dimensional structure schematic view of the piston rod of the utility model;

[0018] Figure 3 It is a three-dimensional structure schematic view of the first rectangular plate of the utility model;

[0019] Figure 4 It is a three-dimensional structure schematic view of the second rectangular plate of the utility model;

[0020] Figure 5 It is a three-dimensional structure schematic view of the gear of the utility model.

[0021] In the drawing: 1, coal slurry pump body; 2, dismounting cylinder; 3, circular port; 4, piston rod; 5, first rectangular plate; 6, semicircle ring; 7, threaded ring; 8, rubber pad; 9, rectangular frame; 10, rectangular block; 11, second rectangular plate; 12, positioning groove; 13, positioning block; 14, positioning shaft; 15, supporting block; 16, rotating shaft; 17, gear; 18, clamping block; 19, tooth plate; 20, transmission shaft; 21, stress spring; 22, clamping groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Referring to Figures 1-5 A high-pressure coal slurry pump piston rod convenient to fasten, including coal slurry pump body 1, the inner wall of coal slurry pump body 1 is screwed with piston rod 4, the outer surface of piston rod 4 is provided with two semicircles 6, the outer surface of one of semicircles 6 is fixedly connected with two first rectangular plates 5, the front surface of each first rectangular plate 5 is fixedly connected with positioning block 13, the upper surface of each positioning block 13 is provided with positioning groove 12, by being provided with positioning block 13 and positioning groove 12, better positioning purpose is achieved.

[0024] The outer surface of the other semicircle 6 is fixedly connected with two second rectangular plates 11, the front surface of each second rectangular plate 11 is fixedly connected with support block 15, the upper surface of each support block 15 is fixedly connected with positioning shaft 14, the outer surface of each positioning shaft 14 is slidably connected with the inside of positioning groove 12, by being provided with positioning shaft 14, the second rectangular plate 11 can be positioned below the first rectangular plate 5 through the sliding connection between positioning shaft 14 and positioning groove 12, so that the tooth plate 19 fixed on the upper surface of the second rectangular plate 11 can smoothly enter the inside of the first rectangular plate 5.

[0025] The inner wall of each first rectangular plate 5 is fixedly connected with rectangular frame 9, the inner wall of each rectangular frame 9 and the inner wall of first rectangular plate 5 are rotatably connected with shaft 16, the outer surface of each shaft 16 is fixedly connected with gear 17, the outer surface of each gear 17 is engaged with tooth plate 19, the bottom surface of each tooth plate 19 penetrates rectangular frame 9 and first rectangular plate 5 and extends below first rectangular plate 5, the bottom surface of each tooth plate 19 is fixedly connected with the upper surface of second rectangular plate 11, the outer surface of each tooth plate 19 is slidably connected with the inside of first rectangular plate 5 and rectangular frame 9, the end of two gears 17 away from each other is provided with clamping groove 22, the outer surface of each semicircle 6 is fixedly connected with rubber pad 8, the outer surface of each rubber pad 8 is in contact with the outer surface of piston rod 4, by being provided with rubber pad 8, the rotating power received by semicircle 6 can be transmitted to piston rod 4 by using the characteristics of large friction coefficient of rubber pad 8, so as to drive piston rod 4 to rotate.

[0026] The inner wall of each rectangular frame 9 is fixedly connected with a force spring 21, the ends of the two force springs 21 close to each other are fixedly connected with clamping blocks 18, the outer surfaces of each clamping block 18 are slidably connected with the inside of the rectangular frame 9, the outer surfaces of each clamping block 18 are clamped with the inside of the clamping groove 22, the ends of the two clamping blocks 18 away from each other are fixedly connected with transmission shafts 20, the outer surfaces of each transmission shaft 20 are slidably connected with the inside of the rectangular frame 9, the inner wall of the coal slurry pump body 1 is threadedly connected with a threaded ring 7, the front surface of the threaded ring 7 is fixedly connected with a dismounting cylinder 2, the threaded ring 7 and the dismounting cylinder 2 can be dismounted from the coal slurry pump body 1, and the installation of the holding device is facilitated.

[0027] The ends of the two transmission shafts 20 away from each other are fixedly connected with rectangular blocks 10, the front surface of the dismounting cylinder 2 is provided with a plurality of same circular openings 3, each transmission shaft 20 is arranged in the inner cavity of the force spring 21, the circular openings 3 can guide the gas generated when the piston rod 4 moves to the outside, and the gas is prevented from accumulating in the inside of the dismounting cylinder 2.

[0028] The working principle of the utility model is: when in use, the dismounting cylinder 2 can be dismounted by rotating, then the first rectangular plate 5 and the second rectangular plate 11 can be butted from the outside of the piston rod 4, the semicircular ring 6 can be sleeved on the periphery of the piston rod 4, the rubber pad 8 fixed on the outer surface of the semicircular ring 6 can be in close contact with the outer surface of the piston rod 4, when the first rectangular plate 5 is butted with the second rectangular plate 11, the toothed plate 19 fixed on the upper surface of the second rectangular plate 11 can enter the inside of the first rectangular plate 5, the toothed plate 19 can be in meshing relationship with the gear 17 arranged in the inside of the first rectangular plate 5, thus the gear 17 can be rotated, until the clamping groove 22 arranged on one side of the gear 17 is rotated to the position opposite to the clamping block 18, at this time, the clamping block 18 can be moved to the clamping groove 22 under the action of the force spring 21, until the clamping block 18 is clamped in the inside of the clamping groove 22, the purpose of fixing the gear 17 is realized, at this time, the gear 17 cannot be rotated any more, the toothed plate 19 is further limited to move up and down, so that the first rectangular plate 5 and the second rectangular plate 11 can be fixed together, then the rotating power can be applied to the first rectangular plate 5 and the second rectangular plate 11 to drive the piston rod 4 to rotate, so that the piston rod 4 can be fastened, when dismounting, the rectangular block 10 can drive the transmission shaft 20 and the clamping block 18 to move to the force spring 21, so that the clamping block 18 is separated from the clamping groove 22, at this time, the gear 17 and the toothed plate 19 are not limited any more, the second rectangular plate 11 and the first rectangular plate 5 can be dismounted freely, so that the equipment can be installed and dismounted without tools in the process of use, and the problem of inconvenience is avoided.

[0029] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0030] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0031] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A piston rod for a high-pressure coal slurry pump that is easy to fasten, comprising a coal slurry pump body (1), characterized in that: The inner wall of the slurry pump body (1) is threaded with a piston rod (4). The outer surface of the piston rod (4) is provided with two semicircular rings (6). Two first rectangular plates (5) are fixedly connected to the outer surface of one of the semicircular rings (6), and two second rectangular plates (11) are fixedly connected to the outer surface of the other semicircular ring (6). A rectangular frame (9) is fixedly connected to the inner wall of each first rectangular plate (5). A rotating shaft (16) is rotatably connected to the inner wall of each rectangular frame (9) and the inner wall of the first rectangular plate (5). A gear (17) is fixedly connected to the outer surface of each rotating shaft (16). A toothed plate (19) meshes with the outer surface of each gear (17). The bottom surface of each toothed plate (19) penetrates the rectangular frame (9) and the first rectangular plate (5) and extends to the bottom of the first rectangular plate (5). The bottom surface of each toothed plate (19) meshes with the second rectangular plate (5). The upper surface of the rectangular plate (11) is fixedly connected, the outer surface of each toothed plate (19) is slidably connected to the interior of the first rectangular plate (5) and the rectangular frame (9), the two gears (17) are provided with slots (22) at their far ends, the inner wall of each rectangular frame (9) is fixedly connected with a force spring (21), the two force springs (21) are fixedly connected with a block (18) at their close ends, the outer surface of each block (18) is slidably connected to the interior of the rectangular frame (9), the outer surface of each block (18) is engaged with the interior of the slot (22), the two blocks (18) are fixedly connected with a drive shaft (20) at their far ends, the outer surface of each drive shaft (20) is slidably connected to the interior of the rectangular frame (9), and the two drive shafts (20) are fixedly connected with a rectangular block (10) at their far ends.

2. The piston rod of a high-pressure coal slurry pump according to claim 1, characterized in that: Each of the first rectangular plates (5) has a positioning block (13) fixedly connected to its front side, and each positioning block (13) has a positioning groove (12) on its upper surface.

3. The piston rod of a high-pressure coal slurry pump according to claim 2, characterized in that: Each of the second rectangular plates (11) has a support block (15) fixedly connected to its front side, and a positioning shaft (14) fixedly connected to the upper surface of each support block (15). The outer surface of each positioning shaft (14) is slidably connected to the inside of the positioning groove (12).

4. The piston rod of a high-pressure coal slurry pump according to claim 1, characterized in that: Each of the semicircular rings (6) has a rubber pad (8) fixedly connected to its outer surface, and the outer surface of each rubber pad (8) is in contact with the outer surface of the piston rod (4).

5. A high-pressure coal slurry pump piston rod that is easy to fasten according to claim 1, characterized in that: The inner wall of the coal slurry pump body (1) is threaded with a threaded ring (7), and the front of the threaded ring (7) is fixedly connected with a disassembly cylinder (2).

6. A high-pressure coal slurry pump piston rod that is easy to fasten according to claim 5, characterized in that: The disassembly cylinder (2) has several identical circular openings (3) on its front side, and each of the drive shafts (20) is located in the inner cavity of the force spring (21).

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